1161235356 has 24 divisors (see below), whose sum is σ = 2710157184. Its totient is φ = 386991600.

The previous prime is 1161235319. The next prime is 1161235363. The reversal of 1161235356 is 6535321611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67431 + ... + 82881.

It is an arithmetic number, because the mean of its divisors is an integer number (112923216).

Almost surely, 2^1161235356 is an apocalyptic number.

It is an amenable number.

1161235356 is an abundant number, since it is smaller than the sum of its proper divisors (1548921828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161235356 is a wasteful number, since it uses less digits than its factorization.

1161235356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21721 (or 21719 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 1161235356 is about 34076.9035565146. The cubic root of 1161235356 is about 1051.0904336236.

Adding to 1161235356 its reverse (6535321611), we get a palindrome (7696556967).

The spelling of 1161235356 in words is "one billion, one hundred sixty-one million, two hundred thirty-five thousand, three hundred fifty-six".